Self-feeding furnace.



rNms'zzm. PATBNTED JULY s1, 1906.

' W. I. BLY.

- SELF FEEDING FURNAGE.

APPLICATION FILED NOV. 23., 1904.

3 SHEETS-SHEET 2.

* W. LELY. SELF PEEDING FURNAGE.

.APPLICATION PILD Nov. z3. 1904.

3 SHEETS-SHEET y3.

L17-fet wn ey PATBNTEDJULY 31, 19o6.

uNTED STATES PATENT OFFICE.

lWILLIAM I. ELY, oF ST. PAUL, MINNESQTA.

sEL'FFi-:EDING FURNACE.

. Application nea Novemberl 23,1904. Seriana/233,976.

To all whom it may con/cern):

Be it known that I, WILLIAM I. ELY, 'a citilzen of theUnited States, residing. at St. Paul, 1 in the county of Ramsey and State of Minnesota, have invented'4 a new -.`and.useful Self'- Feeding Furnace, of .which the following is a specification. j

My invention relates to improvements in self-feedingfurnaces, andparticularly, though not exclus1vely,.to that class in .whichthe grate-bars are arrangedl in two. rows on the opposite ,sides of the furnace-chamber and inclined downwardly toward the center, the

fuel being introduced at the top and fed toward the middle, said class of :furnace 'being usually provided with a device for mechanically removing the clinkers The object of mmventlon is. to'adjust the parts of the worklng mechanism' and to improve the means forfeeding the fuel and in' troducing air into the furnace@ Further, my mventlon contemplates improved yfeatures of construction and oombinations of arts, hereinafter more particularly descri eda'nd claimed. In the accompanying drawings,

` part of this specification, Figurel "is a front I views showing part of the adiusting mechanlect in the interval between the two fgrate sections, whenoe'the may be easily removed l by meansofthe clin er-'barFL "Each maga ism, and Figs. 7 and Svare detail views of the coking-pl ate.

Inthe drawings, A represents. the grate, made two sections inclining toward the center and forming substantially a V-shaped grate,` which is' fed from magazinesy B in the side walls 2 andB lbymeans of the stolsersD. The fuel delivered by these stpkers D advance's over the grates, and the' cinders collzine hase frame 4 in .the side walls, said'walls havingpassage-ways or openings 5, which'- communicate with -the .front .of the furnace..

The coal-magazines extend alongside andthe whole length ofthe combustionchamber and are provided with racking-plates' (1,1' detach? ably fastened tothe suplpprts4 6 by means of the bol/ts `7. These co formlng 11g-plate supports specification of Letters Pate-nt.

'ratentea July 31, 190e.

g are of' skeleton form and fastened,1by means of bolts 8,.to, the bottom of the coal-maga-v zines. The cokin'g-plates andtheir supportsl have surfaces which are inclined toward the grate-bars in the furnace.

6o The coalmagazines are provided,With-division-plates 10 and uides 1 1 for the stokers.l These division-p ates andy guides are also inclined toI ward the grate-bars in the furnace and with the surfaces 9 and the walls of the magazine fgrm passage-ways 12, in which the stokers oscillate tpass the coal ont'o the grate. The stokers are adjust'ablyl operated by the following parts: J

Each Stoker is provided with teeth 13, with which the toothed segments 14 engage to' oscillat'e said Stoker. The toothed segments are mounted on'shafts 15, which rest in the bearing-cups 16, formed in the coking-plate supports 6. These shafts are longitudinally bar, and a horizontal-toothed bar 23 isheld in position on the vertical sup orts 20 and 22 by -means of bolts 24.- A'n 'a justing device 25 is placed on the toothed bar 23 .on each side of the pair of levers and engages thev Verdisposed, pass through the front wall E of the l teeth on the rack-bar by means of the dog 26, mounted upon'the shaft 27 which ishprov ided with the handle y'28. This 'adjustable I connectingdevice has an opening 29, through "which the rack-bar passes, and is formed with alug 30 'on its inner side. The levers 17 are engaged 'b .the lugs 21 and 30 as the rackbar 1,8 oscillates to turn the shafts 1.5 and feed the coal from the magazine into the furnace'. By-turning the handles 28- and lifting the dogs 26 the connections between the rackbar and shafts may be adjusted, and the Vtravel of the stokers D is thus regulated as desired. Substantially the same construction is shown-forad'usting the movement of the @linker-bar F, win endsof the grate-bars and carried by the shaft 31. nauxiliary rack-bar 34 is supported by depending arms 33 on the bar 18. An "adjustmg device 35, similar in construction vloo ch is between the lower hasl a dog 36, which is ada ted to engage the plates and adapted to travel thereon, said teeth on the vbar 34. The ug on the back of the adjusting device and the lug 37 on the vback of one of the depending supports 33, as

shown, are adapted to engage e lever 32 and operatively connect with the shaft 31 as the rack-bar 18 reciprocates. By moving the device 35 on the toothed bar 34 the m0- tion of the clinker-bar may beadjusted.

Where the furnaces are double, a single 'wall between furnaces of each pair is preferablyused, and the stokers and their corre'- sponding coal-magazines are double, as shown in the drawings. In this arrangement of furnaces that portion of each stoker farthest from'the fire-box has strips cut away lto form openin s or passage-ways 38 and leave tongues 39. T ese tongues 39 on one stoker are positioned to alternate with those'on the other. In other words, the tongues on one stoker corresond with the openings cut away in the l secon stoker, so that said tongues on onet may pass without contactbetween those on the other if bychance both stokers reach the upper ends of their respective strokes conurrently. This construction is shown in Air is admitted into the furnace thnou h the openings 48 below the grate-bars andt e draft passage-ways, which are regulated by the damper 50 on the front of the furnace, .to

1 circulate freely around the working parts of the stokers, fand another current ofair enters through the door 52 and openings 41., the latter being below the coking-plates and above the tgrate-bars for the purpose of kee ingthe coking-plates cool and aiding combustion. A' assa e-way'42, leading from the ports 4.3 be ow t space 44 between the sides 47 of the maga- 'z1nes and the archway 46 above the furnace` and ultimately leads through the exit 47 into the furnace to cool the contiguous parts and also to assist in the combustion of coal.

Having described my invention, what I claim as new, and desire to protect .by Let- 1. A furnacefhaving agrate, a Stoker, a movable clinker-b`ar and a\ coking-plate, two inde endentlmea'ns, each" consisting of` a ratc et and,A aWl, forregulating, respectively, the stroke o the stoker andthe movement of said clinker.bar,and an air-inlet aboveithe e stokers, communicates with theA stokers being provided on their adjacent sides with spaced tongues, the tongues of one being. adapted to pass freely between those of the other to permit the stokers to reach the upper ends of their respective strokes concurrently.

3. In a double furnace, the combination of V-shaped grates formed by inclined bars, a coal-magazine provided with two ou-tlets above said grates and between the combustionechambers, inclined, reci rocating stokers, whose lines of travel overllap beneath said magazine, said stokers being formed withalternately-arranged tongues adjacent to said magazine, the tonguesion'one stoker being adapted to pass freely between those on the other when they meet, and means for reci rocating the stokers and for regulating tie strokes thereof.

4. A side-feed furnace, comprising a plurality of combustion chambers provlded with V-shaped grates, two oppositely-inclined coking-plates, with their upper sides adjacent, between the combustion-chambers, reciprocating stokers adapted to travel one above each coking-plate and overlap when at the upper extremities of their strokes, said stokers having portions .of their upper sidescut away so that the adjacent stokers may reach the, upper ends of their respective strokes concurrently without collision, and adjustable means for regulating the stroke of the stokers. j

5. A'furnace having a reciprocating stoker, a movable clinker-bar and two independent means, each consisting of a ratchet and Aawl, for regulatin respectively, the stro e of the Stoker an the movement of the clinkerbar.

6. A furnace havin two grates down- ;wardly inclined towar .each other, a movable elinker-bar between the lower ends of said grates, coal-magazines, above said grate, in the walls ofs'aid furnace and having outlet IOO passage-ways into the combustion-chamber,

coking-plates at the bottom f said outlet passage-Ways, stokers adapted to .reci recate in said passage-ways, actuating Vmec anism for voperating said stokers and clinker-bar, and separate means for 'independently adjusting the travel of said stokers and the movement-of the clinker-bar.

v In testimony whereof I `have signed Inyname to this specification in the presenceof two subscribing witnesses. V

WILLIAM I. ELX. Witnesses:4

E. M. Bonsa., W. H. WILLIAMS.

Ito 

